Vulnerability-Lookup

GHSA-9RPW-2H95-666C

Vulnerability from github – Published: 2022-10-01 15:52 – Updated: 2023-10-02 11:20

Summary

Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package

Details

Impact

The sflow decode package prior to version 3.4.4 does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume huge amounts of memory resulting in a denial of service.

Specific Go Packages Affected

github.com/cloudflare/goflow/v3/decoders/sflow

Patches

Version 3.4.4 contains patches fixing this.

Workarounds

A possible workaround is to not have your goflow collector publicly reachable.

For more information

If you have any questions or comments about this advisory: * Open an issue in goflow repo * Email us netdev[@]cloudflare.com

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cloudflare/goflow/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-2529"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-10-01T15:52:23Z",
    "nvd_published_at": "2022-09-30T11:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nThe sflow decode package prior to version 3.4.4 does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume huge amounts of memory resulting in a denial of service.\n\n### Specific Go Packages Affected\ngithub.com/cloudflare/goflow/v3/decoders/sflow\n\n### Patches\nVersion 3.4.4 contains patches fixing this.\n\n### Workarounds\nA possible workaround is to not have your goflow collector publicly reachable.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [goflow repo](https://github.com/cloudflare/goflow)\n* Email us [netdev[@]cloudflare.com ](mailto:netdev@cloudflare.com)\n",
  "id": "GHSA-9rpw-2h95-666c",
  "modified": "2023-10-02T11:20:15Z",
  "published": "2022-10-01T15:52:23Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2529"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/goflow/commit/2b94619a6204443e3ca1769f4e459f9f57039c51"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/goflow/commit/c829ccd2c0aafdc9b886b20bf6f28095607f4998"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cloudflare/goflow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/goflow/releases/tag/v3.4.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package"
}

CVE-2022-2529 (GCVE-0-2022-2529)

Vulnerability from cvelistv5 – Published: 2022-09-30 10:45 – Updated: 2025-05-20 16:03

Title

Multiple DoS Attack Vectors in sflow packet handling

Summary

sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-20 - Improper Input Validation
CWE-400 - Uncontrolled Resource Consumption

Assigner

cloudflare

References

1 reference

URL	Tags
https://github.com/cloudflare/goflow/security/adv…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Cloudflare	goflow	Affected: unspecified , < 3.4.4 (custom)

Credits

Justin Timperio, Chase Hiltz

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T00:39:08.043Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-2529",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-20T16:02:58.308388Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-20T16:03:07.474Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "platforms": [
            "Go"
          ],
          "product": "goflow",
          "vendor": "Cloudflare",
          "versions": [
            {
              "lessThan": "3.4.4",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Justin Timperio, Chase Hiltz"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400 Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-09-30T10:45:11.000Z",
        "orgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
        "shortName": "cloudflare"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade goflow at least to version 3.4.4"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Multiple DoS Attack Vectors in sflow packet handling",
      "workarounds": [
        {
          "lang": "en",
          "value": "Make sure that the goflow collector is not publicly reachable."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cna@cloudflare.com",
          "ID": "CVE-2022-2529",
          "STATE": "PUBLIC",
          "TITLE": "Multiple DoS Attack Vectors in sflow packet handling"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "goflow",
                      "version": {
                        "version_data": [
                          {
                            "platform": "Go",
                            "version_affected": "\u003c",
                            "version_value": "3.4.4"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Cloudflare"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Justin Timperio, Chase Hiltz"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20 Improper Input Validation"
                }
              ]
            },
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-400 Uncontrolled Resource Consumption"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c",
              "refsource": "MISC",
              "url": "https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Upgrade goflow at least to version 3.4.4"
          }
        ],
        "source": {
          "discovery": "EXTERNAL"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "Make sure that the goflow collector is not publicly reachable."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
    "assignerShortName": "cloudflare",
    "cveId": "CVE-2022-2529",
    "datePublished": "2022-09-30T10:45:11.000Z",
    "dateReserved": "2022-07-25T00:00:00.000Z",
    "dateUpdated": "2025-05-20T16:03:07.474Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted